Metsähovi Radio Observatory operates a fourteen-meter radio telescope at frequencies 2-150 GHz. The main fields of activity are: radio astronomical observations and multifrequency science (emphasis on active galactic nuclei and the Sun), Very Long Baseline Interferometry, radio astronomical instrumentation, space technology + instrumentation, researcher training in radio astronomy.Metsähovi hosts an extensive database of long-term quasar radio flux monitoring data as well as long-term observational data of the radio Sun.The observatory is a separate institute of the Aalto University School of Electrical Engineering, and it is located in Kirkkonummi, some 30 kilometres west of the Otaniemi campus. It is also one of the major research and teaching infrastructures of the university.In addition to the local personnel, Metsähovi hosts researchers and students especially from the Department of Radio Science and Technology and the Finnish Centre of Astronomy with the ESO, but also visitors from other Schools of Aalto as well as from other universities.